Which of these human characteristics is hypothesized to have evolved first?
A) enlarged brain
B) erect posture
C) language
D) loss of body hair
B
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A tubal ligation is a surgical procedure in which the uterine tubes are severed, and then sealed with a laser. How would this cause sterility?
A. Oocytes cannot be produced by meiosis. B. Oocytes cannot move to the uterus. C. Oocytes cannot be produced by mitosis. D. A woman cannot have an orgasm. E. The ovary stops producing estrogen.
Classification.The processes listed below represent major chemical pathways in photosynthesis. Respond to the following statements with reference to these five processes.
A. This yields NADPH as well as ATP. B. This is a carbon-fixing system that separates two carbon fixations into night and day activities. C. In this process, carbon dioxide is incorporated first into an unstable intermediate compound and then into phosphoglycerate. D. PGAL molecules are formed from the reaction of PGA molecules with ATP and NADPH in this pathway. E. This carbon-fixing system uses CO2from inside the plant, and precedes the Calvin-Benson cycle.
Facilitated diffusion and active transport require a carrier protein to mediate the movement across the plasma membrane.
Answer the following statement true (T) or false (F)
________ is the hormone released by the pancreas to lower levels of glucose in the blood.
Fill in the blank(s) with the appropriate word(s).